The vertical display is abnormal

Description

The vertical display is abnormal.
The vertical line disappears or appears in the wrong position.

What MCU/Processor/Board and compiler are you using?

STM32F767

What LVGL version are you using?

v8

What have you tried so far?

I change another LCD, the problem exist still.
When the widget size is change, the vertical line appears in the wrong position.

Screenshot and/or video

(the abnormal is marked in the red rectangle)

if the chart size is set as 85% of container, there is a vertical line disappeared.

if the chart size is set as 84% of container, there is a vertical line appeared at wrong position.

In the bottom, the horizontal displays error which causes a gap on the bottom

Thank you for your suggestion. Best Wishes.